1212142245 has 64 divisors (see below), whose sum is σ = 2116316160. Its totient is φ = 590028800.

The previous prime is 1212142231. The next prime is 1212142301. The reversal of 1212142245 is 5422412121.

1212142245 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1212142245 - 2⁶ = 1212142181 is a prime.

It is a super-2 number, since 2×1212142245² = 2938577644227280050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2812180 + ... + 2812610.

It is an arithmetic number, because the mean of its divisors is an integer number (33067440).

Almost surely, 2^1212142245 is an apocalyptic number.

1212142245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1212142245 is a deficient number, since it is larger than the sum of its proper divisors (904173915).

1212142245 is a wasteful number, since it uses less digits than its factorization.

1212142245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766.

The product of its digits is 1280, while the sum is 24.

The square root of 1212142245 is about 34815.8332515538. The cubic root of 1212142245 is about 1066.2307313131.

Adding to 1212142245 its reverse (5422412121), we get a palindrome (6634554366).

The spelling of 1212142245 in words is "one billion, two hundred twelve million, one hundred forty-two thousand, two hundred forty-five".